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综述了喷浆机械手的工作原理，阐述了负载敏感技术的构成和工作原理，建立了负载敏感系统的 AMESim 模型，通过对系统的仿真研究，分析了负载敏感系统的压力及流量特性，为了解负载敏感系统的优点提供了数据支持，并为喷浆机械手的设计及发展提供了理论依据。“,”The working principle of shotcrete mechanical arm was reviewed,and the structure and working princi-ple of load sensing technology was described in this paper.Based on an AMESim model for load-sensing system, the characteristics of pressure and flow for Load-sensing-system was analyzed to understand the benefits of load sensing system and theoretical basis for design and development of shotcrete mechanical arm.